Furniture clamp



June 13, 1933. H. A. GREEN FURNITURE CLAMP Filed April' 5, 1932 3 Sheets-Sheet 1 .u. WWH

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INVENTOR %Aw7 46/4 64 ATTORNEY June 13, 1933. H. A. GREEN FURNITURE CLAMP Filed April 5, 1932 3 Sheets-Sheet 2 iNVENTOR $7071? @601 BY FEECEEFCCCCCCEEECCBCEE ATTORNEY June 13, 1933. H. A. GREEN 108 FURNITURE CLAMP Filed April 5, 1932 3 Sheets-Sheet 3 gnnnnnnnnnm? mnnnn nnnnnnnnnnnnn n BY 7% f ATTORNEY Patented June 13, 1933 KTED STATES PATENT OFFICE HARRY A. GREEN, OF PORTLAND, OREGON FURNITURE CLAMP Application filed April 5, 1932. Serial No. 603,419.

eled edges together; glue having been previously applied.

Heretofore the clamping frames used for this purpose have been provided with independent and individually operable clamping members against the sides and ends, but

such type of clamp is slow in operation, because the workman must walk around the frame to operate each clamp separately.

The object of my invention is to provide a furniture clamp readily adjustable for application to work ;of varying dimensions, comprising clamping elements normal to each other, individually adjustable to the Work, and operable as a unit to apply pressure on both the ends and the sides of the work simultaneously; and further to become locked by operation in its pressure applying state until released.

A further object of 'myginvention is to provide a furniture clamp adapted for'operating upon articles of furniture having projecting leg portions and the like, whereby an equal pressure may be imposed both on the body of thearticle of furniture and the legs.

A further object ofmy invention is to provide a simple and economical furniture clamp of few parts, which will not easily get out of order and which will not injure the article of furniture operatedupon.

These and other incidental features of my invention, the details of construction and mode of operation are hereinafter described in detail with reference to the accompanying drawings.

In the drawings:

Fig. 1 shows a plan view of my furniture clamp and illustrates the relative arrangement of the clamping elements and the operating means therefor;

Fig. 2 shows a sectional side view of my furniture clamp taken on the line 22l'of Fig. 1 and illustrates the clamping elements 111 open position;

Fig. 3 shows a section taken similarly to Fig. 1, with the clamping elements locked in closed position; Fig. 4 shows a transverse section of my clamp, taken on the line 4-4 of Fig. l'and further illustrates the operating means of 610 the clamping elements;

" Fig. 5 shows a section taken on the line 55 of Fig. 1 and further illustrates the operating means of the clamping elements;

Fig. 6 shows a section'taken similarly to Fig. 5 and illustrates the clamping elements locked in closed position; and

Fig. 7 shows a fragmentary end view of my clamp partly in section, taken looking in the direction of the arrow 7 in Fig. 1

and illustrates further details of my furniture clamp.

Referring now to Figure 1: My clamp comprises a rigid rectangular frame composed of channel iron side members a, b and hollow cross members d, 6. Suitable legs or supports f are provided at the corners of the frame. 3 An angle iron member 0 is secured to one end of the frame, the upstanding edge 0 of which constitutes an abutment. Longitudinally arranged guides g, 9 connected at their ends to the hollow cross members 03, 6

respectively, are centrally arranged within the frame.

Primary and secondary angular clamping members Z, m arranged opposite to the abutment 0, are slidably mounted on said guides g, 9, see Fig. 1. An adjusting screw 0 located between the guides g, g is rotatably and slidably supported at one end in the cross member d and provided with alaterally extending supporting member h at its other end which is slidably supported on the guides g, g.

The clamping members Z, m are connected to the adjusting screw 0 by downwardly extending U-fianges r, 8, see Figs. 2 and 3, in

which the said screw is threaded. Adjusting nuts t, 10 arranged within the said U- flanges r, s are threaded on the screw 0, by which the said clamping members Z, m are longitudinally movable on the said screw 0.

A toggle q is pivotally connected to one end of the said adjusting screw 0 and at its other end to a crank arm 2 carried on the end of a rotatable shaft 3, transversely journaled in depending flanges 4 carried by the angle iron member 0. The shaft 3 is provided with a bevel gear 10 meshing with a similar gear 11 carried by the end of a rotatable shaft 12, arranged parallel with and under the frame member a. The said shaft 12 journaled at its ends in flanges 13.

The end of the shaft 12 carrying t is gear 11 is extended and provided with an operating lever 15, by which, upon rotation of the shaft 12 the shaft 3 will be rotated and draw the c lamping members I, on into clamping position.

In the case of bedstead ends having projecting legs, both the clamping members Z, m are used, the member Z bearing against the ends of the legs and the member an against the body of the bedstead end, see Fig. 1. Of course, if an article of furniture not having projecting legs is placed in the clamp, the clamping member Z would not be used. Wood pieces Z and m are placed on the said clamping members and serve as lateral extensions and also to protect the articles of furniture from injury by being in contact with the metal clamping members.

The frame member a is provided with an angle iron abutment 20 provided with bosses 21 mounted on the cross members (Z, c. The abutment 20 is rigidly but adjustable secured in place by pins 22 inserted thru the bosses and one of a series of holes 23 in the said cross members d, e.

A clamping member 30 is arranged oppositely to the said abutment 20 and is slidably mounted on the cross members d, e by sleeves 31, see Fig. 5. The sleeves 31 are provided with depending lugs in which are threaded adjusting screws 34, 35, the outer ends of which extend thru and are slidably mounted in the frame member 6. Sprockets 36, 37 are provided on the extremities of the said screws 34, 35 and are connected by a chain 38. An operating handle 39 is provided on the sprocket 37. By these means the clamping member 30 is adjustable relatively to the abutment 20. V

The adjusting screws 34, 35 are connected to collars 40, 41, slidably mounted "espectively upon the cross members (Z, 0-. Toggles 42, 43, see Figs. 4 and G, are pivotally connected tothe said collars 40, 41 and to arms 44, 45, carried by the shaft 12, and thus: are operable by the rotation of the shaft 12, simultaneously with the clamping members Z, on.

It is to be noted that the toggles g and 42, 43, by which the clamping members are operated, are curved so that when drawn into clamping position they pass over the centers of the shafts 3 and 12 and are thus locked in position until released by the reverse rotation of the said shafts.

Operation Assuming my clamp is to be used for assembling the parts of one end of a bedstead 00, arranged as illustrated in the figures, the head of the bedstead bearing against the abutment 0; the clamping members 30 and l, on having first been adjusted by rotating the sprocket Wheel 37, and the nuts ('3, u having also been adjusted to provide space so as to permit the parts of the bedstead end to be loosely assembled and laid in the clamping frame, then operation of the lever 15 will rotate the shafts 3 and 12 and draw the clamping members Z, m and 30 simultaneously upon the bedstead end and force its parts together so that the corner block and fastening nails and screws may be driven into the assembled bedstead and convert it into a rigid structure; glue having been previously applied to the dowel holes and grooves.

I claim:

1. A furniture clamp comprising a frame provided with abutments at two sides normal to each other, a Work-clamping element opposed to each abutment, one of said workclamping elements comprising primary and secondary members adapted to bear upon the body and a projecting portion of the work, respectively, means for adjusting each clamping element relatively to the work, and means for forcing said work-clamping elements simultaneously against the work.

2. A furniture clamp comprising a frame provided with abutments at two sides normal to each other, a work-clamping element opposed to each abutment, one of said workclamping elements comprising primary and secondary members adapted to bear upon the body and a projecting portion of the Work, respectively, means for adjusting each clamping element relatively to the work, including guide elements arranged relatively to said abutments, said clamping elements slidable on said guide elements, and means for forcing said work clamping elements simultaneously against the work.

3. In a furniture clamp a frame provided with abutments at two sides normal to each other, a work-clamping element opposed to each abutment, one of said work-clamping elements comprising primary and secondary members adapted to bear upon the body and a projecting portion of the work, respectively, means for adjusting each of said primary and secondary members relatively to the work, and means engaging said clamping elements and operative to force the same against the work simultaneously.

4. In a furniture clamp, a Work clamping 7 the body and aprojecting portion of the Work, respectively, means for adjusting each clamp relatively to the Work, and means for forcing said clamping elements simultaneously against the Work, such means adapted in operation to became locked in active position until released.

H. A. GREEN. 

